Oxygen-absorbing resin composition

Abstract

An oxygen-absorbing resin composition comprising a polyester compound having a constitutional unit (a), which has at least one tetralin ring selected from the group consisting of the following general formulas (1) to (4) and a constitutional unit (b) comprising residue of tetrahydrophthalic anhydride derivative which is represented by the following general formula (5) and/or general formula (6).

The invention claimed is: 
     
       1. An oxygen-absorbing resin composition comprising a polyester compound having a constitutional unit (a), which has at least one tetralin ring, selected from the group consisting of the following general formulas (1) to (4): 
       
         
           
           
               
               
           
         
       
       wherein each R independently represents a monovalent substituent, the monovalent substituent being at least one selected from the group consisting of a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxy group, a carboxyl group, an ester group, an amido group, a nitro group, an alkoxy group, an aryloxy group, an acyl group, an amino group, a thiol group, an alkylthio group, an arylthio group, a heterocyclic thio group and an imido group, optionally further having a substituent; wherein at least one hydrogen atom is bound to a benzyl position of the tetralin ring; wherein X represents a divalent group comprising at least one group selected from the group consisting of an aromatic hydrocarbon group, a saturated or unsaturated alicyclic hydrocarbon group and a linear or branched and saturated or unsaturated aliphatic hydrocarbon group and a heterocyclic group; wherein each m independently represents an integer of 0 to 3 and each n independently represents an integer of 0 to 6 and a constitutional unit (b), comprising residue of tetrahydrophthalic anhydride derivative which is represented by the following general formula (5) and/or general formula (6), 
       
         
           
           
               
               
           
         
       
       wherein each R independently represents a monovalent substituent, the monovalent substituent being at least one selected from the group consisting of a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxy group, a carboxyl group, an ester group, an amido group, a nitro group, an alkoxy group, an aryloxy group, an acyl group, an amino group, a thiol group, an alkylthio group, an arylthio group, a heterocyclic thio group and an imido group, optionally further having a substituent; wherein each p independently-represents an integer of 1 to 5. 
     
     
       2. The oxygen-absorbing resin composition according to  claim 1 , wherein the polyester compound contains the constitutional unit (a) represented by the general formula (1) and the constitutional unit (b) in a molar ratio of 99:1 to 50:50. 
     
     
       3. The oxygen-absorbing resin composition according to  claim 1 , wherein the constitutional unit (a) is at least one selected from the group consisting of the following formula (7), formula (8) and formula (9) 
       
         
           
           
               
               
           
         
       
     
     
       4. The oxygen-absorbing resin composition according to  claim 1 , wherein the constitutional unit (b) is at least the following formula (10) and/or formula (11), 
       
         
           
           
               
               
           
         
       
       a total amount of formula (10) and formula (11) in the constitutional unit (b) is 50 mol % or more.